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<a name="1" href="#1">1</a>   <em class="jxr_comment">/*</em>
<a name="2" href="#2">2</a>   <em class="jxr_comment"> *  Licensed to the Apache Software Foundation (ASF) under one or more</em>
<a name="3" href="#3">3</a>   <em class="jxr_comment"> *  contributor license agreements.  See the NOTICE file distributed with</em>
<a name="4" href="#4">4</a>   <em class="jxr_comment"> *  this work for additional information regarding copyright ownership.</em>
<a name="5" href="#5">5</a>   <em class="jxr_comment"> *  The ASF licenses this file to You under the Apache License, Version 2.0</em>
<a name="6" href="#6">6</a>   <em class="jxr_comment"> *  (the "License"); you may not use this file except in compliance with</em>
<a name="7" href="#7">7</a>   <em class="jxr_comment"> *  the License.  You may obtain a copy of the License at</em>
<a name="8" href="#8">8</a>   <em class="jxr_comment"> *</em>
<a name="9" href="#9">9</a>   <em class="jxr_comment"> *     <a href="http://www.apache.org/licenses/LICENSE-2.0" target="alexandria_uri">http://www.apache.org/licenses/LICENSE-2.0</a></em>
<a name="10" href="#10">10</a>  <em class="jxr_comment"> *</em>
<a name="11" href="#11">11</a>  <em class="jxr_comment"> *  Unless required by applicable law or agreed to in writing, software</em>
<a name="12" href="#12">12</a>  <em class="jxr_comment"> *  distributed under the License is distributed on an "AS IS" BASIS,</em>
<a name="13" href="#13">13</a>  <em class="jxr_comment"> *  WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.</em>
<a name="14" href="#14">14</a>  <em class="jxr_comment"> *  See the License for the specific language governing permissions and</em>
<a name="15" href="#15">15</a>  <em class="jxr_comment"> *  limitations under the License.</em>
<a name="16" href="#16">16</a>  <em class="jxr_comment"> */</em>
<a name="17" href="#17">17</a>  
<a name="18" href="#18">18</a>  <strong class="jxr_keyword">package</strong> java.net;
<a name="19" href="#19">19</a>  
<a name="20" href="#20">20</a>  
<a name="21" href="#21">21</a>  <strong class="jxr_keyword">import</strong> java.io.IOException;
<a name="22" href="#22">22</a>  
<a name="23" href="#23">23</a>  <em class="jxr_javadoccomment">/**</em>
<a name="24" href="#24">24</a>  <em class="jxr_javadoccomment"> * The abstract superclass of all classes that implement Protocol Handler.</em>
<a name="25" href="#25">25</a>  <em class="jxr_javadoccomment"> */</em>
<a name="26" href="#26">26</a>  <strong class="jxr_keyword">public</strong> <strong class="jxr_keyword">abstract</strong> <strong class="jxr_keyword">class</strong> <a href="../../java/net/URLStreamHandler.html">URLStreamHandler</a> {
<a name="27" href="#27">27</a>  	<em class="jxr_javadoccomment">/**</em>
<a name="28" href="#28">28</a>  <em class="jxr_javadoccomment">	 * Establishes a connection to the resource specified by &lt;code&gt;URL&lt;/code&gt;.</em>
<a name="29" href="#29">29</a>  <em class="jxr_javadoccomment">	 * Since different protocols may have unique ways of connecting, it must be</em>
<a name="30" href="#30">30</a>  <em class="jxr_javadoccomment">	 * overwritten by the subclass.</em>
<a name="31" href="#31">31</a>  <em class="jxr_javadoccomment">	 * </em>
<a name="32" href="#32">32</a>  <em class="jxr_javadoccomment">	 * @return java.net.URLConnection</em>
<a name="33" href="#33">33</a>  <em class="jxr_javadoccomment">	 * @param u</em>
<a name="34" href="#34">34</a>  <em class="jxr_javadoccomment">	 *            java.net.URL</em>
<a name="35" href="#35">35</a>  <em class="jxr_javadoccomment">	 * </em>
<a name="36" href="#36">36</a>  <em class="jxr_javadoccomment">	 * @exception IOException</em>
<a name="37" href="#37">37</a>  <em class="jxr_javadoccomment">	 *                thrown if an IO error occurs during connection</em>
<a name="38" href="#38">38</a>  <em class="jxr_javadoccomment">	 *                establishment</em>
<a name="39" href="#39">39</a>  <em class="jxr_javadoccomment">	 */</em>
<a name="40" href="#40">40</a>  	<em class="jxr_comment">//protected abstract URLConnection openConnection(URL u) throws IOException;</em>
<a name="41" href="#41">41</a>  	
<a name="42" href="#42">42</a>  	<em class="jxr_javadoccomment">/**</em>
<a name="43" href="#43">43</a>  <em class="jxr_javadoccomment">	 * The method is the same as &lt;code&gt;openConnection(URL u)&lt;/code&gt; except </em>
<a name="44" href="#44">44</a>  <em class="jxr_javadoccomment">	 * that it uses the &lt;code&gt;proxy&lt;/code&gt; to establish a connection to the </em>
<a name="45" href="#45">45</a>  <em class="jxr_javadoccomment">	 * &lt;code&gt;URL&lt;/code&gt;. Since different protocols may have different ways of</em>
<a name="46" href="#46">46</a>  <em class="jxr_javadoccomment">	 * connecting, it must be overwritten by the subclass.</em>
<a name="47" href="#47">47</a>  <em class="jxr_javadoccomment">	 * </em>
<a name="48" href="#48">48</a>  <em class="jxr_javadoccomment">	 * @return java.net.URLConnection</em>
<a name="49" href="#49">49</a>  <em class="jxr_javadoccomment">	 * @param u</em>
<a name="50" href="#50">50</a>  <em class="jxr_javadoccomment">	 *            java.net.URL</em>
<a name="51" href="#51">51</a>  <em class="jxr_javadoccomment">	 * @param proxy</em>
<a name="52" href="#52">52</a>  <em class="jxr_javadoccomment">	 *            the proxy which is used to make the connection</em>
<a name="53" href="#53">53</a>  <em class="jxr_javadoccomment">	 * </em>
<a name="54" href="#54">54</a>  <em class="jxr_javadoccomment">	 * @throws IOException</em>
<a name="55" href="#55">55</a>  <em class="jxr_javadoccomment">	 *                thrown if an IO error occurs during connection</em>
<a name="56" href="#56">56</a>  <em class="jxr_javadoccomment">	 *                establishment</em>
<a name="57" href="#57">57</a>  <em class="jxr_javadoccomment">	 * @throws IllegalArgumentException</em>
<a name="58" href="#58">58</a>  <em class="jxr_javadoccomment">	 *             if any argument is null or the type of proxy is wrong.</em>
<a name="59" href="#59">59</a>  <em class="jxr_javadoccomment">	 * @throws UnsupportedOperationException</em>
<a name="60" href="#60">60</a>  <em class="jxr_javadoccomment">	 *             if the protocol handler doesn't support this method.</em>
<a name="61" href="#61">61</a>  <em class="jxr_javadoccomment">	 */</em>
<a name="62" href="#62">62</a>  	<em class="jxr_comment">//protected URLConnection openConnection(URL u, Proxy proxy) throws IOException{</em>
<a name="63" href="#63">63</a>  	<em class="jxr_comment">//	throw new UnsupportedOperationException();</em>
<a name="64" href="#64">64</a>  	<em class="jxr_comment">//}</em>
<a name="65" href="#65">65</a>  
<a name="66" href="#66">66</a>  	<em class="jxr_javadoccomment">/**</em>
<a name="67" href="#67">67</a>  <em class="jxr_javadoccomment">	 * Parse the &lt;code&gt;string&lt;/code&gt;str into &lt;code&gt;URL&lt;/code&gt; using u's</em>
<a name="68" href="#68">68</a>  <em class="jxr_javadoccomment">	 * context. URL strings generally have the following format:</em>
<a name="69" href="#69">69</a>  <em class="jxr_javadoccomment">	 * &lt;code&gt;&lt;center&gt;//www.company.com/java/file1.java#reference &lt;/center&gt;&lt;/code&gt;</em>
<a name="70" href="#70">70</a>  <em class="jxr_javadoccomment">	 * The string is parsed in HTTP format. If the protocol has a different URL</em>
<a name="71" href="#71">71</a>  <em class="jxr_javadoccomment">	 * format this method must be overridden.</em>
<a name="72" href="#72">72</a>  <em class="jxr_javadoccomment">	 * </em>
<a name="73" href="#73">73</a>  <em class="jxr_javadoccomment">	 * @param u</em>
<a name="74" href="#74">74</a>  <em class="jxr_javadoccomment">	 *            java.net.URL The URL to receive parsed values.</em>
<a name="75" href="#75">75</a>  <em class="jxr_javadoccomment">	 * @param str</em>
<a name="76" href="#76">76</a>  <em class="jxr_javadoccomment">	 *            java.lang.String The string URL spec from which u is derived</em>
<a name="77" href="#77">77</a>  <em class="jxr_javadoccomment">	 * @param start</em>
<a name="78" href="#78">78</a>  <em class="jxr_javadoccomment">	 *            int The index in the string from which to begin parsing</em>
<a name="79" href="#79">79</a>  <em class="jxr_javadoccomment">	 * @param end</em>
<a name="80" href="#80">80</a>  <em class="jxr_javadoccomment">	 *            int The index to stop parsing</em>
<a name="81" href="#81">81</a>  <em class="jxr_javadoccomment">	 * </em>
<a name="82" href="#82">82</a>  <em class="jxr_javadoccomment">	 * @see #toExternalForm</em>
<a name="83" href="#83">83</a>  <em class="jxr_javadoccomment">	 * @see URL</em>
<a name="84" href="#84">84</a>  <em class="jxr_javadoccomment">	 */</em>
<a name="85" href="#85">85</a>  	<strong class="jxr_keyword">protected</strong> <strong class="jxr_keyword">void</strong> parseURL(<a href="../../java/net/URL.html">URL</a> u, String str, <strong class="jxr_keyword">int</strong> start, <strong class="jxr_keyword">int</strong> end) {
<a name="86" href="#86">86</a>  		<strong class="jxr_keyword">if</strong> (end &lt; start) {
<a name="87" href="#87">87</a>              <strong class="jxr_keyword">return</strong>;
<a name="88" href="#88">88</a>          }
<a name="89" href="#89">89</a>  		String parseString = <span class="jxr_string">""</span>;
<a name="90" href="#90">90</a>  		<strong class="jxr_keyword">if</strong> (start &lt; end) {
<a name="91" href="#91">91</a>              parseString = str.substring(start, end);
<a name="92" href="#92">92</a>          }
<a name="93" href="#93">93</a>  		end -= start;
<a name="94" href="#94">94</a>  		<strong class="jxr_keyword">int</strong> fileIdx = 0;
<a name="95" href="#95">95</a>  
<a name="96" href="#96">96</a>  		<em class="jxr_comment">// Default is to use info from context</em>
<a name="97" href="#97">97</a>  		String host = u.getHost();
<a name="98" href="#98">98</a>  		<strong class="jxr_keyword">int</strong> port = u.getPort();
<a name="99" href="#99">99</a>  		String ref = u.getRef();
<a name="100" href="#100">100</a> 		String file = u.getPath();
<a name="101" href="#101">101</a> 		String query = u.getQuery();
<a name="102" href="#102">102</a> 		String authority = u.getAuthority();
<a name="103" href="#103">103</a> 		String userInfo = u.getUserInfo();
<a name="104" href="#104">104</a> 
<a name="105" href="#105">105</a> 		<strong class="jxr_keyword">int</strong> refIdx = parseString.indexOf('#', 0);
<a name="106" href="#106">106</a> 		<strong class="jxr_keyword">if</strong> (parseString.startsWith(<span class="jxr_string">"//"</span>)) {
<a name="107" href="#107">107</a> 			<strong class="jxr_keyword">int</strong> hostIdx = 2, portIdx = -1;
<a name="108" href="#108">108</a> 			port = -1;
<a name="109" href="#109">109</a> 			fileIdx = parseString.indexOf('/', hostIdx);
<a name="110" href="#110">110</a>             <strong class="jxr_keyword">int</strong> questionMarkIndex = parseString.indexOf('?', hostIdx);
<a name="111" href="#111">111</a>             <strong class="jxr_keyword">if</strong> ((questionMarkIndex != -1)
<a name="112" href="#112">112</a>                     &amp;&amp; ((fileIdx == -1) || (fileIdx &gt; questionMarkIndex))) {
<a name="113" href="#113">113</a>                 fileIdx = questionMarkIndex;
<a name="114" href="#114">114</a>             }
<a name="115" href="#115">115</a> 			<strong class="jxr_keyword">if</strong> (fileIdx == -1) {
<a name="116" href="#116">116</a> 				fileIdx = end;
<a name="117" href="#117">117</a> 				<em class="jxr_comment">// Use default</em>
<a name="118" href="#118">118</a> 				file = <span class="jxr_string">""</span>;
<a name="119" href="#119">119</a> 			}
<a name="120" href="#120">120</a> 			<strong class="jxr_keyword">int</strong> hostEnd = fileIdx;
<a name="121" href="#121">121</a> 			<strong class="jxr_keyword">if</strong> (refIdx != -1 &amp;&amp; refIdx &lt; fileIdx) {
<a name="122" href="#122">122</a>                 hostEnd = refIdx;
<a name="123" href="#123">123</a>             }
<a name="124" href="#124">124</a> 			<strong class="jxr_keyword">int</strong> userIdx = parseString.lastIndexOf('@', hostEnd);
<a name="125" href="#125">125</a> 			authority = parseString.substring(hostIdx, hostEnd);
<a name="126" href="#126">126</a> 			<strong class="jxr_keyword">if</strong> (userIdx &gt; -1) {
<a name="127" href="#127">127</a> 				userInfo = parseString.substring(hostIdx, userIdx);
<a name="128" href="#128">128</a> 				hostIdx = userIdx + 1;
<a name="129" href="#129">129</a> 			}
<a name="130" href="#130">130</a> 
<a name="131" href="#131">131</a> 			portIdx = parseString.indexOf(':', userIdx == -1 ? hostIdx
<a name="132" href="#132">132</a> 					: userIdx);
<a name="133" href="#133">133</a> 			<strong class="jxr_keyword">int</strong> endOfIPv6Addr = parseString.indexOf(']');
<a name="134" href="#134">134</a> 			<em class="jxr_comment">// if there are square braces, ie. IPv6 address, use last ':'</em>
<a name="135" href="#135">135</a> 			<strong class="jxr_keyword">if</strong> (endOfIPv6Addr != -1) {
<a name="136" href="#136">136</a> 				<strong class="jxr_keyword">try</strong> {
<a name="137" href="#137">137</a> 					<strong class="jxr_keyword">if</strong> (parseString.length() &gt; endOfIPv6Addr + 1) {
<a name="138" href="#138">138</a> 						<strong class="jxr_keyword">char</strong> c = parseString.charAt(endOfIPv6Addr + 1);
<a name="139" href="#139">139</a> 						<strong class="jxr_keyword">if</strong> (c == ':') {
<a name="140" href="#140">140</a> 							portIdx = endOfIPv6Addr + 1;
<a name="141" href="#141">141</a> 						} <strong class="jxr_keyword">else</strong> {
<a name="142" href="#142">142</a> 							portIdx = -1;
<a name="143" href="#143">143</a> 						}
<a name="144" href="#144">144</a> 					} <strong class="jxr_keyword">else</strong> {
<a name="145" href="#145">145</a> 						portIdx = -1;
<a name="146" href="#146">146</a> 					}
<a name="147" href="#147">147</a> 				} <strong class="jxr_keyword">catch</strong> (Exception e) {
<a name="148" href="#148">148</a> 					<em class="jxr_comment">// Ignored</em>
<a name="149" href="#149">149</a> 				}
<a name="150" href="#150">150</a> 			}
<a name="151" href="#151">151</a> 
<a name="152" href="#152">152</a> 			<strong class="jxr_keyword">if</strong> (portIdx == -1 || portIdx &gt; fileIdx) {
<a name="153" href="#153">153</a>                 host = parseString.substring(hostIdx, hostEnd);
<a name="154" href="#154">154</a>             } <strong class="jxr_keyword">else</strong> {
<a name="155" href="#155">155</a> 				host = parseString.substring(hostIdx, portIdx);
<a name="156" href="#156">156</a> 				String portString = parseString.substring(portIdx + 1, hostEnd);
<a name="157" href="#157">157</a> 				<strong class="jxr_keyword">if</strong> (portString.length() == 0) {
<a name="158" href="#158">158</a>                     port = -1;
<a name="159" href="#159">159</a>                 } <strong class="jxr_keyword">else</strong> {
<a name="160" href="#160">160</a>                     port = Integer.parseInt(portString);
<a name="161" href="#161">161</a>                 }
<a name="162" href="#162">162</a> 			}
<a name="163" href="#163">163</a> 		}
<a name="164" href="#164">164</a> 
<a name="165" href="#165">165</a> 		<strong class="jxr_keyword">if</strong> (refIdx &gt; -1) {
<a name="166" href="#166">166</a>             ref = parseString.substring(refIdx + 1, end);
<a name="167" href="#167">167</a>         }
<a name="168" href="#168">168</a> 		<strong class="jxr_keyword">int</strong> fileEnd = (refIdx == -1 ? end : refIdx);
<a name="169" href="#169">169</a> 
<a name="170" href="#170">170</a> 		<strong class="jxr_keyword">int</strong> queryIdx = parseString.lastIndexOf('?', fileEnd);
<a name="171" href="#171">171</a>         <strong class="jxr_keyword">boolean</strong> canonicalize = false;
<a name="172" href="#172">172</a>         <strong class="jxr_keyword">if</strong> (queryIdx &gt; -1) {
<a name="173" href="#173">173</a>             query = parseString.substring(queryIdx + 1, fileEnd);
<a name="174" href="#174">174</a>             <strong class="jxr_keyword">if</strong> (queryIdx == 0 &amp;&amp; file != <strong class="jxr_keyword">null</strong>) {
<a name="175" href="#175">175</a>                 <strong class="jxr_keyword">if</strong> (file.equals(<span class="jxr_string">""</span>)) {
<a name="176" href="#176">176</a>                     file = <span class="jxr_string">"/"</span>;
<a name="177" href="#177">177</a>                 } <strong class="jxr_keyword">else</strong> <strong class="jxr_keyword">if</strong> (file.startsWith(<span class="jxr_string">"/"</span>)) {
<a name="178" href="#178">178</a>                     canonicalize = <strong class="jxr_keyword">true</strong>;
<a name="179" href="#179">179</a>                 }
<a name="180" href="#180">180</a>                 <strong class="jxr_keyword">int</strong> last = file.lastIndexOf('/') + 1;
<a name="181" href="#181">181</a>                 file = file.substring(0, last);
<a name="182" href="#182">182</a>             }
<a name="183" href="#183">183</a>             fileEnd = queryIdx;
<a name="184" href="#184">184</a>         } <strong class="jxr_keyword">else</strong>
<a name="185" href="#185">185</a>         <em class="jxr_comment">// Don't inherit query unless only the ref is changed</em>
<a name="186" href="#186">186</a>         <strong class="jxr_keyword">if</strong> (refIdx != 0) {
<a name="187" href="#187">187</a>             query = <strong class="jxr_keyword">null</strong>;
<a name="188" href="#188">188</a>         }
<a name="189" href="#189">189</a> 
<a name="190" href="#190">190</a> 		<strong class="jxr_keyword">if</strong> (fileIdx &gt; -1) {
<a name="191" href="#191">191</a> 			<strong class="jxr_keyword">if</strong> (fileIdx &lt; end &amp;&amp; parseString.charAt(fileIdx) == '/') {
<a name="192" href="#192">192</a>                 file = parseString.substring(fileIdx, fileEnd);
<a name="193" href="#193">193</a>             } <strong class="jxr_keyword">else</strong> <strong class="jxr_keyword">if</strong> (fileEnd &gt; fileIdx) {
<a name="194" href="#194">194</a> 				<strong class="jxr_keyword">if</strong> (file == <strong class="jxr_keyword">null</strong>) {
<a name="195" href="#195">195</a>                     file = <span class="jxr_string">""</span>;
<a name="196" href="#196">196</a>                 } <strong class="jxr_keyword">else</strong> <strong class="jxr_keyword">if</strong> (file.equals(<span class="jxr_string">""</span>)) {
<a name="197" href="#197">197</a>                     file = <span class="jxr_string">"/"</span>;
<a name="198" href="#198">198</a>                 } <strong class="jxr_keyword">else</strong> <strong class="jxr_keyword">if</strong> (file.startsWith(<span class="jxr_string">"/"</span>)) {
<a name="199" href="#199">199</a>                     canonicalize = <strong class="jxr_keyword">true</strong>;
<a name="200" href="#200">200</a>                 }
<a name="201" href="#201">201</a> 				<strong class="jxr_keyword">int</strong> last = file.lastIndexOf('/') + 1;
<a name="202" href="#202">202</a> 				<strong class="jxr_keyword">if</strong> (last == 0) {
<a name="203" href="#203">203</a>                     file = parseString.substring(fileIdx, fileEnd);
<a name="204" href="#204">204</a>                 } <strong class="jxr_keyword">else</strong> {
<a name="205" href="#205">205</a>                     file = file.substring(0, last)
<a name="206" href="#206">206</a> 							+ parseString.substring(fileIdx, fileEnd);
<a name="207" href="#207">207</a>                 }
<a name="208" href="#208">208</a> 			}
<a name="209" href="#209">209</a> 		}
<a name="210" href="#210">210</a> 		<strong class="jxr_keyword">if</strong> (file == <strong class="jxr_keyword">null</strong>) {
<a name="211" href="#211">211</a>             file = <span class="jxr_string">""</span>;
<a name="212" href="#212">212</a>         }
<a name="213" href="#213">213</a> 
<a name="214" href="#214">214</a> 		<strong class="jxr_keyword">if</strong> (host == <strong class="jxr_keyword">null</strong>) {
<a name="215" href="#215">215</a>             host = <span class="jxr_string">""</span>;
<a name="216" href="#216">216</a>         }
<a name="217" href="#217">217</a> 
<a name="218" href="#218">218</a> 		<strong class="jxr_keyword">if</strong> (canonicalize) {
<a name="219" href="#219">219</a> 			<em class="jxr_comment">// modify file if there's any relative referencing</em>
<a name="220" href="#220">220</a> 			<strong class="jxr_keyword">int</strong> dirIndex;
<a name="221" href="#221">221</a> 			<strong class="jxr_keyword">while</strong> ((dirIndex = file.indexOf(<span class="jxr_string">"/./"</span>)) &gt;= 0) {
<a name="222" href="#222">222</a>                 file = file.substring(0, dirIndex + 1)
<a name="223" href="#223">223</a> 						+ file.substring(dirIndex + 3);
<a name="224" href="#224">224</a>             }
<a name="225" href="#225">225</a> 			<strong class="jxr_keyword">if</strong> (file.endsWith(<span class="jxr_string">"/."</span>)) {
<a name="226" href="#226">226</a>                 file = file.substring(0, file.length() - 1);
<a name="227" href="#227">227</a>             }
<a name="228" href="#228">228</a> 			<strong class="jxr_keyword">while</strong> ((dirIndex = file.indexOf(<span class="jxr_string">"/../"</span>)) &gt;= 0) {
<a name="229" href="#229">229</a> 				<strong class="jxr_keyword">if</strong> (dirIndex != 0) {
<a name="230" href="#230">230</a> 					file = file.substring(0, file
<a name="231" href="#231">231</a> 							.lastIndexOf('/', dirIndex - 1))
<a name="232" href="#232">232</a> 							+ file.substring(dirIndex + 3);
<a name="233" href="#233">233</a> 				} <strong class="jxr_keyword">else</strong> {
<a name="234" href="#234">234</a>                     file = file.substring(dirIndex + 3);
<a name="235" href="#235">235</a>                 }
<a name="236" href="#236">236</a> 			}
<a name="237" href="#237">237</a> 			<strong class="jxr_keyword">if</strong> (file.endsWith(<span class="jxr_string">"/.."</span>) &amp;&amp; file.length() &gt; 3) {
<a name="238" href="#238">238</a>                 file = file.substring(0, file.lastIndexOf('/',
<a name="239" href="#239">239</a> 						file.length() - 4) + 1);
<a name="240" href="#240">240</a>             }
<a name="241" href="#241">241</a> 		}
<a name="242" href="#242">242</a> 
<a name="243" href="#243">243</a> 		setURL(u, u.getProtocol(), host, port, authority, userInfo, file,
<a name="244" href="#244">244</a> 				query, ref);
<a name="245" href="#245">245</a> 	}
<a name="246" href="#246">246</a> 
<a name="247" href="#247">247</a> 	<em class="jxr_javadoccomment">/**</em>
<a name="248" href="#248">248</a> <em class="jxr_javadoccomment">	 * Sets the fields of the &lt;code&gt;URL&lt;/code&gt; with the supplied arguments</em>
<a name="249" href="#249">249</a> <em class="jxr_javadoccomment">	 * </em>
<a name="250" href="#250">250</a> <em class="jxr_javadoccomment">	 * @param u</em>
<a name="251" href="#251">251</a> <em class="jxr_javadoccomment">	 *            java.net.URL The non-null URL to be set</em>
<a name="252" href="#252">252</a> <em class="jxr_javadoccomment">	 * @param protocol</em>
<a name="253" href="#253">253</a> <em class="jxr_javadoccomment">	 *            java.lang.String The protocol</em>
<a name="254" href="#254">254</a> <em class="jxr_javadoccomment">	 * @param host</em>
<a name="255" href="#255">255</a> <em class="jxr_javadoccomment">	 *            java.lang.String The host name</em>
<a name="256" href="#256">256</a> <em class="jxr_javadoccomment">	 * @param port</em>
<a name="257" href="#257">257</a> <em class="jxr_javadoccomment">	 *            int The port number</em>
<a name="258" href="#258">258</a> <em class="jxr_javadoccomment">	 * @param file</em>
<a name="259" href="#259">259</a> <em class="jxr_javadoccomment">	 *            java.lang.String The file component</em>
<a name="260" href="#260">260</a> <em class="jxr_javadoccomment">	 * @param ref</em>
<a name="261" href="#261">261</a> <em class="jxr_javadoccomment">	 *            java.lang.String The reference</em>
<a name="262" href="#262">262</a> <em class="jxr_javadoccomment">	 * </em>
<a name="263" href="#263">263</a> <em class="jxr_javadoccomment">	 * @see java.util.Set</em>
<a name="264" href="#264">264</a> <em class="jxr_javadoccomment">	 * </em>
<a name="265" href="#265">265</a> <em class="jxr_javadoccomment">	 * @deprecated use setURL(URL, String String, int, String, String, String,</em>
<a name="266" href="#266">266</a> <em class="jxr_javadoccomment">	 *             String, String)</em>
<a name="267" href="#267">267</a> <em class="jxr_javadoccomment">	 */</em>
<a name="268" href="#268">268</a>     <strong class="jxr_keyword">protected</strong> <strong class="jxr_keyword">void</strong> setURL(<a href="../../java/net/URL.html">URL</a> u, String protocol, String host, <strong class="jxr_keyword">int</strong> port,
<a name="269" href="#269">269</a> 			String file, String ref) {
<a name="270" href="#270">270</a> 		u.set(protocol, host, port, file, ref);
<a name="271" href="#271">271</a> 	}
<a name="272" href="#272">272</a> 
<a name="273" href="#273">273</a> 	<em class="jxr_javadoccomment">/**</em>
<a name="274" href="#274">274</a> <em class="jxr_javadoccomment">	 * Sets the fields of the &lt;code&gt;URL&lt;/code&gt; with the supplied arguments</em>
<a name="275" href="#275">275</a> <em class="jxr_javadoccomment">	 * </em>
<a name="276" href="#276">276</a> <em class="jxr_javadoccomment">	 * @param u</em>
<a name="277" href="#277">277</a> <em class="jxr_javadoccomment">	 *            java.net.URL The non-null URL to be set</em>
<a name="278" href="#278">278</a> <em class="jxr_javadoccomment">	 * @param protocol</em>
<a name="279" href="#279">279</a> <em class="jxr_javadoccomment">	 *            java.lang.String The protocol</em>
<a name="280" href="#280">280</a> <em class="jxr_javadoccomment">	 * @param host</em>
<a name="281" href="#281">281</a> <em class="jxr_javadoccomment">	 *            java.lang.String The host name</em>
<a name="282" href="#282">282</a> <em class="jxr_javadoccomment">	 * @param port</em>
<a name="283" href="#283">283</a> <em class="jxr_javadoccomment">	 *            int The port number</em>
<a name="284" href="#284">284</a> <em class="jxr_javadoccomment">	 * @param authority</em>
<a name="285" href="#285">285</a> <em class="jxr_javadoccomment">	 *            java.lang.String The authority</em>
<a name="286" href="#286">286</a> <em class="jxr_javadoccomment">	 * @param userInfo</em>
<a name="287" href="#287">287</a> <em class="jxr_javadoccomment">	 *            java.lang.String The user info</em>
<a name="288" href="#288">288</a> <em class="jxr_javadoccomment">	 * @param file</em>
<a name="289" href="#289">289</a> <em class="jxr_javadoccomment">	 *            java.lang.String The file component</em>
<a name="290" href="#290">290</a> <em class="jxr_javadoccomment">	 * @param query</em>
<a name="291" href="#291">291</a> <em class="jxr_javadoccomment">	 *            java.lang.String The query</em>
<a name="292" href="#292">292</a> <em class="jxr_javadoccomment">	 * @param ref</em>
<a name="293" href="#293">293</a> <em class="jxr_javadoccomment">	 *            java.lang.String The reference</em>
<a name="294" href="#294">294</a> <em class="jxr_javadoccomment">	 * </em>
<a name="295" href="#295">295</a> <em class="jxr_javadoccomment">	 * @see java.util.Set</em>
<a name="296" href="#296">296</a> <em class="jxr_javadoccomment">	 */</em>
<a name="297" href="#297">297</a> 	<strong class="jxr_keyword">protected</strong> <strong class="jxr_keyword">void</strong> setURL(<a href="../../java/net/URL.html">URL</a> u, String protocol, String host, <strong class="jxr_keyword">int</strong> port,
<a name="298" href="#298">298</a> 			String authority, String userInfo, String file, String query,
<a name="299" href="#299">299</a> 			String ref) {
<a name="300" href="#300">300</a> 		u.set(protocol, host, port, authority, userInfo, file, query, ref);
<a name="301" href="#301">301</a> 	}
<a name="302" href="#302">302</a> 
<a name="303" href="#303">303</a> 	<em class="jxr_javadoccomment">/**</em>
<a name="304" href="#304">304</a> <em class="jxr_javadoccomment">	 * Answers the string equivalent of an URL using HTTP parsinf format.</em>
<a name="305" href="#305">305</a> <em class="jxr_javadoccomment">	 * </em>
<a name="306" href="#306">306</a> <em class="jxr_javadoccomment">	 * @return java.lang.String the string representation of this URL</em>
<a name="307" href="#307">307</a> <em class="jxr_javadoccomment">	 * @param url</em>
<a name="308" href="#308">308</a> <em class="jxr_javadoccomment">	 *            java.net.URL the url object to be processed</em>
<a name="309" href="#309">309</a> <em class="jxr_javadoccomment">	 * </em>
<a name="310" href="#310">310</a> <em class="jxr_javadoccomment">	 * @see #parseURL</em>
<a name="311" href="#311">311</a> <em class="jxr_javadoccomment">	 * @see URL#toExternalForm()</em>
<a name="312" href="#312">312</a> <em class="jxr_javadoccomment">	 */</em>
<a name="313" href="#313">313</a> 	<strong class="jxr_keyword">protected</strong> String toExternalForm(<a href="../../java/net/URL.html">URL</a> url) {
<a name="314" href="#314">314</a> 		StringBuffer answer = <strong class="jxr_keyword">new</strong> StringBuffer(url.getProtocol().length()
<a name="315" href="#315">315</a> 				+ url.getFile().length() + 16);
<a name="316" href="#316">316</a> 		answer.append(url.getProtocol());
<a name="317" href="#317">317</a> 		answer.append(':');
<a name="318" href="#318">318</a> 		String authority = url.getAuthority();
<a name="319" href="#319">319</a> 		<strong class="jxr_keyword">if</strong> (authority != <strong class="jxr_keyword">null</strong> &amp;&amp; authority.length() &gt; 0) {
<a name="320" href="#320">320</a> 			answer.append(<span class="jxr_string">"//"</span>);
<a name="321" href="#321">321</a> 			answer.append(url.getAuthority());
<a name="322" href="#322">322</a> 		}
<a name="323" href="#323">323</a> 
<a name="324" href="#324">324</a> 		String file = url.getFile();
<a name="325" href="#325">325</a> 		String ref = url.getRef();
<a name="326" href="#326">326</a> 		<em class="jxr_comment">// file is never null</em>
<a name="327" href="#327">327</a> 		answer.append(file);
<a name="328" href="#328">328</a> 		<strong class="jxr_keyword">if</strong> (ref != <strong class="jxr_keyword">null</strong>) {
<a name="329" href="#329">329</a> 			answer.append('#');
<a name="330" href="#330">330</a> 			answer.append(ref);
<a name="331" href="#331">331</a> 		}
<a name="332" href="#332">332</a> 		<strong class="jxr_keyword">return</strong> answer.toString();
<a name="333" href="#333">333</a> 	}
<a name="334" href="#334">334</a> 
<a name="335" href="#335">335</a> 	<em class="jxr_javadoccomment">/**</em>
<a name="336" href="#336">336</a> <em class="jxr_javadoccomment">	 * Compares the two urls, and answers true if they represent the same URL.</em>
<a name="337" href="#337">337</a> <em class="jxr_javadoccomment">	 * Two URLs are equal if they have the same file, host, port, protocol,</em>
<a name="338" href="#338">338</a> <em class="jxr_javadoccomment">	 * query, and ref components.</em>
<a name="339" href="#339">339</a> <em class="jxr_javadoccomment">	 * </em>
<a name="340" href="#340">340</a> <em class="jxr_javadoccomment">	 * @param url1</em>
<a name="341" href="#341">341</a> <em class="jxr_javadoccomment">	 *            URL the first URL to compare</em>
<a name="342" href="#342">342</a> <em class="jxr_javadoccomment">	 * @param url2</em>
<a name="343" href="#343">343</a> <em class="jxr_javadoccomment">	 *            URL the second URL to compare</em>
<a name="344" href="#344">344</a> <em class="jxr_javadoccomment">	 * @return &lt;code&gt;true&lt;/code&gt; if the URLs are the same &lt;code&gt;false&lt;/code&gt;</em>
<a name="345" href="#345">345</a> <em class="jxr_javadoccomment">	 *         if the URLs are different</em>
<a name="346" href="#346">346</a> <em class="jxr_javadoccomment">	 * </em>
<a name="347" href="#347">347</a> <em class="jxr_javadoccomment">	 * @see #hashCode</em>
<a name="348" href="#348">348</a> <em class="jxr_javadoccomment">	 */</em>
<a name="349" href="#349">349</a> 	<strong class="jxr_keyword">protected</strong> <strong class="jxr_keyword">boolean</strong> equals(<a href="../../java/net/URL.html">URL</a> url1, <a href="../../java/net/URL.html">URL</a> url2) {
<a name="350" href="#350">350</a> 		<strong class="jxr_keyword">if</strong> (!sameFile(url1, url2)) {
<a name="351" href="#351">351</a>             <strong class="jxr_keyword">return</strong> false;
<a name="352" href="#352">352</a>         }
<a name="353" href="#353">353</a> 		String s1 = url1.getRef(), s2 = url2.getRef();
<a name="354" href="#354">354</a> 		<strong class="jxr_keyword">if</strong> (s1 != s2 &amp;&amp; (s1 == <strong class="jxr_keyword">null</strong> || !s1.equals(s2))) {
<a name="355" href="#355">355</a>             <strong class="jxr_keyword">return</strong> false;
<a name="356" href="#356">356</a>         }
<a name="357" href="#357">357</a> 		s1 = url1.getQuery();
<a name="358" href="#358">358</a> 		s2 = url2.getQuery();
<a name="359" href="#359">359</a> 		<strong class="jxr_keyword">return</strong> s1 == s2 || (s1 != <strong class="jxr_keyword">null</strong> &amp;&amp; s1.equals(s2));
<a name="360" href="#360">360</a> 	}
<a name="361" href="#361">361</a> 
<a name="362" href="#362">362</a> 	<em class="jxr_javadoccomment">/**</em>
<a name="363" href="#363">363</a> <em class="jxr_javadoccomment">	 * Return the default port.</em>
<a name="364" href="#364">364</a> <em class="jxr_javadoccomment">	 */</em>
<a name="365" href="#365">365</a> 	<strong class="jxr_keyword">protected</strong> <strong class="jxr_keyword">int</strong> getDefaultPort() {
<a name="366" href="#366">366</a> 		<strong class="jxr_keyword">return</strong> -1;
<a name="367" href="#367">367</a> 	}
<a name="368" href="#368">368</a> 
<a name="369" href="#369">369</a> 	<em class="jxr_javadoccomment">/**</em>
<a name="370" href="#370">370</a> <em class="jxr_javadoccomment">	 * Return the InetAddress for the host of the URL, or null.</em>
<a name="371" href="#371">371</a> <em class="jxr_javadoccomment">	 */</em>
<a name="372" href="#372">372</a> 	<strong class="jxr_keyword">protected</strong> <a href="../../java/net/InetAddress.html">InetAddress</a> getHostAddress(<a href="../../java/net/URL.html">URL</a> url) {
<a name="373" href="#373">373</a> 		<strong class="jxr_keyword">try</strong> {
<a name="374" href="#374">374</a> 			String host = url.getHost();
<a name="375" href="#375">375</a> 			<strong class="jxr_keyword">if</strong> (host == <strong class="jxr_keyword">null</strong> || host.length() == 0) {
<a name="376" href="#376">376</a>                 <strong class="jxr_keyword">return</strong> <strong class="jxr_keyword">null</strong>;
<a name="377" href="#377">377</a>             }
<a name="378" href="#378">378</a> 			<strong class="jxr_keyword">return</strong> InetAddress.getByName(host);
<a name="379" href="#379">379</a> 		} <strong class="jxr_keyword">catch</strong> (UnknownHostException e) {
<a name="380" href="#380">380</a> 			<strong class="jxr_keyword">return</strong> <strong class="jxr_keyword">null</strong>;
<a name="381" href="#381">381</a> 		}
<a name="382" href="#382">382</a> 	}
<a name="383" href="#383">383</a> 
<a name="384" href="#384">384</a> 	<em class="jxr_javadoccomment">/**</em>
<a name="385" href="#385">385</a> <em class="jxr_javadoccomment">	 * Answers a hash code for the URL object.</em>
<a name="386" href="#386">386</a> <em class="jxr_javadoccomment">	 * </em>
<a name="387" href="#387">387</a> <em class="jxr_javadoccomment">	 * @return int the hashcode for hashtable indexing</em>
<a name="388" href="#388">388</a> <em class="jxr_javadoccomment">	 */</em>
<a name="389" href="#389">389</a> 	<strong class="jxr_keyword">protected</strong> <strong class="jxr_keyword">int</strong> hashCode(<a href="../../java/net/URL.html">URL</a> url) {
<a name="390" href="#390">390</a> 		<strong class="jxr_keyword">return</strong> toExternalForm(url).hashCode();
<a name="391" href="#391">391</a> 	}
<a name="392" href="#392">392</a> 
<a name="393" href="#393">393</a> 	<em class="jxr_javadoccomment">/**</em>
<a name="394" href="#394">394</a> <em class="jxr_javadoccomment">	 * Compares the two urls, and answers true if they have the same host</em>
<a name="395" href="#395">395</a> <em class="jxr_javadoccomment">	 * components.</em>
<a name="396" href="#396">396</a> <em class="jxr_javadoccomment">	 * </em>
<a name="397" href="#397">397</a> <em class="jxr_javadoccomment">	 * @return &lt;code&gt;true&lt;/code&gt; if the hosts of the URLs are the same</em>
<a name="398" href="#398">398</a> <em class="jxr_javadoccomment">	 *         &lt;code&gt;false&lt;/code&gt; if the hosts are different</em>
<a name="399" href="#399">399</a> <em class="jxr_javadoccomment">	 */</em>
<a name="400" href="#400">400</a> 	<strong class="jxr_keyword">protected</strong> <strong class="jxr_keyword">boolean</strong> hostsEqual(<a href="../../java/net/URL.html">URL</a> url1, <a href="../../java/net/URL.html">URL</a> url2) {
<a name="401" href="#401">401</a>         String host1 = url1.getHost(), host2 = url2.getHost();
<a name="402" href="#402">402</a>         <strong class="jxr_keyword">if</strong> (host1 == host2 || (host1 != <strong class="jxr_keyword">null</strong> &amp;&amp; host1.equalsIgnoreCase(host2))) {
<a name="403" href="#403">403</a>             <strong class="jxr_keyword">return</strong> <strong class="jxr_keyword">true</strong>;
<a name="404" href="#404">404</a>         }
<a name="405" href="#405">405</a>         <em class="jxr_comment">// Compare host address if the host name is not equal.</em>
<a name="406" href="#406">406</a>         <a href="../../java/net/InetAddress.html">InetAddress</a> address1 = getHostAddress(url1);
<a name="407" href="#407">407</a>         <a href="../../java/net/InetAddress.html">InetAddress</a> address2 = getHostAddress(url2);
<a name="408" href="#408">408</a>         <strong class="jxr_keyword">if</strong> (address1 != <strong class="jxr_keyword">null</strong> &amp;&amp; address1.equals(address2)) {
<a name="409" href="#409">409</a>             <strong class="jxr_keyword">return</strong> <strong class="jxr_keyword">true</strong>;
<a name="410" href="#410">410</a>         }
<a name="411" href="#411">411</a>         <strong class="jxr_keyword">return</strong> false;
<a name="412" href="#412">412</a>     }
<a name="413" href="#413">413</a> 
<a name="414" href="#414">414</a> 	<em class="jxr_javadoccomment">/**</em>
<a name="415" href="#415">415</a> <em class="jxr_javadoccomment">	 * Answers true if the urls refer to the same file. Compares the protocol,</em>
<a name="416" href="#416">416</a> <em class="jxr_javadoccomment">	 * host, port and file components.</em>
<a name="417" href="#417">417</a> <em class="jxr_javadoccomment">	 * </em>
<a name="418" href="#418">418</a> <em class="jxr_javadoccomment">	 * @return boolean true if the same resource, false otherwise</em>
<a name="419" href="#419">419</a> <em class="jxr_javadoccomment">	 */</em>
<a name="420" href="#420">420</a> 	<strong class="jxr_keyword">protected</strong> <strong class="jxr_keyword">boolean</strong> sameFile(<a href="../../java/net/URL.html">URL</a> url1, <a href="../../java/net/URL.html">URL</a> url2) {
<a name="421" href="#421">421</a> 		String s1 = url1.getProtocol();
<a name="422" href="#422">422</a> 		String s2 = url2.getProtocol();
<a name="423" href="#423">423</a> 		<strong class="jxr_keyword">if</strong> (s1 != s2 &amp;&amp; (s1 == <strong class="jxr_keyword">null</strong> || !s1.equals(s2))) {
<a name="424" href="#424">424</a>             <strong class="jxr_keyword">return</strong> false;
<a name="425" href="#425">425</a>         }
<a name="426" href="#426">426</a> 
<a name="427" href="#427">427</a> 		s1 = url1.getFile();
<a name="428" href="#428">428</a> 		s2 = url2.getFile();
<a name="429" href="#429">429</a> 		<strong class="jxr_keyword">if</strong> (s1 != s2 &amp;&amp; (s1 == <strong class="jxr_keyword">null</strong> || !s1.equals(s2))) {
<a name="430" href="#430">430</a>             <strong class="jxr_keyword">return</strong> false;
<a name="431" href="#431">431</a>         }
<a name="432" href="#432">432</a> 		<strong class="jxr_keyword">if</strong> (!hostsEqual(url1, url2)) {
<a name="433" href="#433">433</a>             <strong class="jxr_keyword">return</strong> false;
<a name="434" href="#434">434</a>         }
<a name="435" href="#435">435</a> 		<strong class="jxr_keyword">int</strong> p1 = url1.getPort();
<a name="436" href="#436">436</a> 		<strong class="jxr_keyword">if</strong> (p1 == -1) {
<a name="437" href="#437">437</a>             p1 = getDefaultPort();
<a name="438" href="#438">438</a>         }
<a name="439" href="#439">439</a> 		<strong class="jxr_keyword">int</strong> p2 = url2.getPort();
<a name="440" href="#440">440</a> 		<strong class="jxr_keyword">if</strong> (p2 == -1) {
<a name="441" href="#441">441</a>             p2 = getDefaultPort();
<a name="442" href="#442">442</a>         }
<a name="443" href="#443">443</a> 		<strong class="jxr_keyword">return</strong> p1 == p2;
<a name="444" href="#444">444</a> 	}
<a name="445" href="#445">445</a> }
</pre>
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